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r2 - 29 Jun 2010 - 04:26:06 - HuyPhanYou are here: TWiki >  Forum Web  >  DiscussionForumOverview > DiscussionForumArticle2010x02x19x00x59
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Pseudorange smoothing
Posted on 19 Feb, 2010 by OctavianAndrei

Is there any class that does the pseudororange smoothing based on time-differenced carrier phases? Or anything else which can be used in this sense. Thank you.
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Hi Andrei,

I have just looked inside the gps toolkit recently. As I know, there are two classes can be used for pseudorange smoothing: CodeSmoother? and PCSmoother. Both of them implement Hatch filters, classical Hatch filter for the former and ionspheric-free for the latter. However, as they use carrier phase measurements, that may experience discontinuities such as cycle slips, to smooth pseudorange, the measurements should be marked with cycle slips first. At the best as I know, there is another place they implement pseudorange smoothing (and phase debiasing as well). That is SatPass? class used for Discontinuity Corrector. But i am not too sure the algorithm used inside. I am about to post a discussion about this. Hope this help.

Regards,
Phan Quoc Huy 		HuyPhan 28 Jun 2010 - 23:26


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